Mitsubishi Electric A800 Plus Series Function Manual page 117

Parameter setting procedure for tension sensorless torque control
11
Mechanical loss compensation function setting
Set the following parameters for using the mechanical loss compensation function.
Pr.
1419 Mechanical loss setting frequency bias
1420 Mechanical loss setting frequency 1
1421 Mechanical loss 1
1422 Mechanical loss setting frequency 2
1423 Mechanical loss 2
1424 Mechanical loss setting frequency 3
1425 Mechanical loss 3
1426 Mechanical loss setting frequency 4
1427 Mechanical loss 4
1428 Mechanical loss setting frequency 5
1429 Mechanical loss 5
∗1 Set the parameters according to the specification of the machine used.
NOTE
• For the details of the mechanical loss compensation function, refer to
12
Stall mode function selection
Set the following parameters for using the stall mode function.
Pr.
178 to 189 Input terminal function selection
Acceleration/deceleration time during stall
270
condition
Commanded tension reduction scaling factor
1406
during stall condition
1407 Speed limit during stall condition
∗1
Set the parameters according to the specification of the machine used.
NOTE
• For the details of the stall mode function, refer to
13
Test run
Operate the system starting from the maximum-diameter roll to the minimum-diameter roll and vice versa and
check that no fault is found in the system behavior.
116
TENSION SENSORLESS TORQUE CONTROL
Name Setting
1000
∗1
∗1
∗1
∗1
∗1
∗1
∗1
∗1
∗1
∗1
Name
page 137.
Remarks
The setting "1000" represents 0%. An offset
can be set in 0.1% increment from the setting
"1000".
Drive the machine with an empty reel at the
frequency of Pr.1420, Pr.1422, Pr.1424,
Pr.1426, and Pr.1428, and set the monitored
torque values in Pr.1421, Pr.1423, Pr.1425,
Pr.1427, and Pr.1429 respectively.
(The setting "1000" in Pr.1421, Pr.1423,
Pr.1425, Pr.1427, and Pr.1429 represents 0%.
An offset can be set in 0.1% increment from
setting "1000".)
page 135.
Setting
123 Assign the Stall mode trigger (X123) signal.
—
∗1
—
∗1
—
∗1
Remarks